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公开(公告)号：US09899065B1
公开(公告)日：2018-02-20
申请号：US15460458
申请日：2017-03-16
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
摘要： Provided herein is a power-on reset circuit and a semiconductor memory device having the power-on reset circuit. The power-on reset circuit may include a reference voltage generation circuit configured to generate a reference voltage using an external supply voltage that is externally input, and a power-on reset signal generation circuit configured to generate a power-on reset signal by sensing a potential level of the reference voltage when the external supply voltage increases to a set level or more. The power-on reset signal generation circuit may be configured to, when the reference voltage changes depending on the temperature variation, control a sensing level to compensate for the change in the reference voltage.
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2.发明授权Electronic apparatus to detect power supply voltage levels to protect peripheral circuits 有权电子设备检测电源电压电平以保护外围电路公开(公告)号：US09575098B2
公开(公告)日：2017-02-21
申请号：US15040359
申请日：2016-02-10
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
IPC分类号： G11C8/00 , G01R19/165 , G11C16/26 , G11C16/30 , H03K5/24 , G11C5/14 , G11C16/22 , G11C15/04 , H03K17/22 , G11C16/04
CPC分类号： G01R19/165 , G11C5/148 , G11C15/046 , G11C16/0483 , G11C16/225 , G11C16/26 , G11C16/30 , H03K5/2472 , H03K17/223
摘要： An electronic apparatus includes a first voltage detection circuit which detects when a voltage, becomes higher than a first level after the voltage starts to be supplied to a peripheral circuit, and detects when the voltage becomes lower than a second level after a supply of the voltage to the peripheral circuit starts to be interrupted, and a second voltage detection circuit which detects when the voltage becomes lower than a reference level while the peripheral circuit operates. The second level is lower than the reference level.
摘要翻译： 一种电子设备，包括：第一电压检测电路，其检测在电压开始向外围电路供电之后电压何时变得高于第一电平，并且在提供电压之后检测电压何时低于第二电平 外围电路开始中断的第二电压检测电路，外围电路工作时，检测电压何时低于基准电平的第二电压检测电路。 第二级别低于参考水平。
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公开(公告)号：US11315608B2
公开(公告)日：2022-04-26
申请号：US17076515
申请日：2020-10-21
申请人： SK hynix Inc.
发明人： Jae In Kim , Hyun Chul Lee
IPC分类号： G11C5/14
摘要： A semiconductor device may include a sudden power detection circuit and an operation circuit. The sudden power detection circuit may generate a power-off control signal in a sudden power-off state. The operation circuit may discharge a specific node based on the power-off control signal.
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公开(公告)号：US11309885B2
公开(公告)日：2022-04-19
申请号：US16918832
申请日：2020-07-01
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
摘要： A power-on reset signal generating device includes a reference voltage generator, a signal driver, and a stabilization circuit. The reference voltage generator generates a power-on reference voltage based on a voltage level of a power supply voltage. The signal driver drives the power-on reference voltage to generate a power-on reset signal. The stabilization circuit receives the power-on reset signal to keep a voltage level of the power-on reference voltage staying during a predetermined amount of time.
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公开(公告)号：US11308995B2
公开(公告)日：2022-04-19
申请号：US17148201
申请日：2021-01-13
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
IPC分类号： G11C5/14
摘要： A semiconductor apparatus including a sudden power detection circuit, a power-on reset circuit, and a driving circuit. The sudden power detection circuit configured to detect an external power supply voltage and generate a sudden power detection signal. The power-on reset circuit configured to detect the voltage level of the external power supply voltage according to a reset reference voltage and generate a power-on reset signal. The driving circuit configured to perform a sudden power-off operation and a power-on reset operation.
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公开(公告)号：US09786371B1
公开(公告)日：2017-10-10
申请号：US15290702
申请日：2016-10-11
申请人： SK hynix Inc.
发明人： Hyun Chul Lee , Yeong Joon Son
CPC分类号： G11C15/046 , G11C5/143 , G11C5/147 , G11C5/148 , G11C7/12 , G11C7/20 , G11C8/12 , G11C11/4072 , G11C11/4074 , G11C11/408
摘要： Provided herein are a power-on reset circuit and a semiconductor memory device including the same. The power-on reset circuit may include: a voltage dividing circuit suitable for dividing an external power supply voltage to output a reference voltage, an output node control circuit suitable for controlling a potential level of an output node to an external power supply voltage level or a ground power supply voltage level in response to the reference voltage, and a buffer circuit suitable for buffering the potential level of the output node to output a power-on reset signal. In the voltage dividing circuit, a potential level of the reference voltage in a power up period is different from a potential level of the reference voltage in a power down period.
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7.发明授权公开(公告)号：US09404946B2
公开(公告)日：2016-08-02
申请号：US14604377
申请日：2015-01-23
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
CPC分类号： G01R19/165 , G11C5/148 , G11C15/046 , G11C16/0483 , G11C16/225 , G11C16/26 , G11C16/30 , H03K5/2472 , H03K17/223
摘要： An electronic apparatus includes a first voltage detection circuit which detects when a voltage, becomes higher than a first level after the voltage starts to be supplied to a peripheral circuit, and detects when the voltage becomes lower than a second level after a supply of the voltage to the peripheral circuit starts to be interrupted, and a second voltage detection circuit which detects when the voltage becomes lower than a reference level while the peripheral circuit operates. The second level is lower than the reference level.
摘要翻译： 一种电子设备，包括：第一电压检测电路，其检测在电压开始向外围电路供电之后电压何时变得高于第一电平，并且在提供电压之后检测电压何时低于第二电平 外围电路开始中断的第二电压检测电路，外围电路工作时，检测电压何时低于基准电平的第二电压检测电路。 第二级别低于参考水平。
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公开(公告)号：US09223330B2
公开(公告)日：2015-12-29
申请号：US14225025
申请日：2014-03-25
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
摘要： An internal voltage generation circuit includes a comparison unit suitable for comparing a voltage level of a feedback voltage with that of a reference voltage, and generating a comparison signal and an acceleration voltage, a pull-up driving unit suitable for driving an internal voltage terminal to be pulled up in response to the comparison signal, a discharging unit suitable for discharging the internal voltage terminal in response to the acceleration voltage, and a voltage division unit suitable for dividing a voltage level of the internal voltage terminal, and generating the feedback voltage.
摘要翻译： 内部电压产生电路包括：比较单元，用于将反馈电压的电压电平与参考电压的电压进行比较，并产生比较信号和加速电压;上拉驱动单元，适于驱动内部电压端子 响应于比较信号被上拉，适合于根据加速电压对内部电压端子进行放电的放电单元，以及用于分压内部电压端子的电压电平并产生反馈电压的分压单元。
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公开(公告)号：US10734037B1
公开(公告)日：2020-08-04
申请号：US16843702
申请日：2020-04-08
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
IPC分类号： G11C5/14 , H03K5/24 , G01R19/165 , H03K5/00 , G11C16/30
摘要： In a low voltage detection circuit having improved detection performance, the low voltage detection circuit includes: a comparison voltage generator for generating a first comparison voltage and a second comparison voltage having a level higher than that of the first comparison voltage by dividing a power voltage; a first comparator for outputting a low voltage detection enable signal by comparing the first comparison voltage with a reference voltage; a second comparator for outputting a detection signal by comparing the second comparison voltage with the reference voltage while the low voltage detection enable signal is being input; a detection signal maintainer for providing a low voltage detection signal to an output terminal according to the detection signal; and an output signal discharger for discharging the low voltage detection signal according to the low voltage detection enable signal.
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公开(公告)号：US10650865B2
公开(公告)日：2020-05-12
申请号：US16170934
申请日：2018-10-25
申请人： SK hynix Inc.
发明人： Hyun Chul Lee
IPC分类号： G11C5/14 , H03K5/24 , G01R19/165 , G11C16/30 , H03K5/00
摘要： In a low voltage detection circuit having improved detection performance, the low voltage detection circuit includes: a comparison voltage generator for generating a first comparison voltage and a second comparison voltage having a level higher than that of the first comparison voltage by dividing a power voltage; a first comparator for outputting a low voltage detection enable signal by comparing the first comparison voltage with a reference voltage; a second comparator for outputting a detection signal by comparing the second comparison voltage with the reference voltage while the low voltage detection enable signal is being input; a detection signal maintainer for providing a low voltage detection signal to an output terminal according to the detection signal; and an output signal discharger for discharging the low voltage detection signal according to the low voltage detection enable signal.
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